Cutter-head.



W. W. PHILBRICK.

CUTTER HEAD.

APPLICATION FILED APR.18'.1907.

906,921. Patented Dec. 15, 1908.

2 SHEETS-SHEET 1.

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APPLIOATIOI FILED APR. 18, 1907.

Patented Dec. 15, 1908.

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WARREN W. PHILBRIGK, OF SEATTLE, WASHINGTON.

CUTTE R-Im AD.

Specification of Letters Patent.

Patented Dec. 15, 1908.

Application filed April 18, 1907. Serial No. 368,807.

To all whom it may concern:

Be it known that I, WARREN WV. PHIL- BRICK, a citizen of the UnitedStates, residing at Seattle, in the county of King and State ofWashington, have invented certain new and useful Improvements in Cutter-Heads, of which the following is a specifization, reference being hadtherein to the accompanying drawings.

This invention relates to matcher-heads and specifically to improvementsin the head shown and described in United States Patent No. 681,4L59,issued to me August 27, 1901; and the object of the present invention isto simplify and perfect the construction in various particulars andrender it more efficient in operation and convenient for adjusting thepositions of the cutters.

lVith these ends in view, the invention consists in the novelconstruction and combination of parts as will be hereinafter describedand claimed.

In the drawings, Figure 1 is a side eleva tion of a cutter-headembodying my improvements and shown in their preferred forms; Fig. 2, anunderside plan view of the same; Fig. 3, a like view to Fig. 2 with thebits and cutters omitted; Fig. 4, a vertical section taken through ofFig. 2; Fig. 5, a rear elevation of a bit carrier; and Fig. (3, aperspective view of a cutter; Fig. 7 1s a view similar to Fig. 1 but ina modified form to illustrate an alternative manner of constructing andsecuring the bit carriers to the head; Fi S is an underside plan view ofFig. 7 with certain of the attachments omitted; and Fig. 9 is a rearelevation of the bit carrier adapted to be employed with the headillustrated in the Figs. 7 and 8.

The herein illustrated embodiment of the present invention, like thatshown and described in the aforesaid patent, has a hub 10 with anenlarged lower portion 11 which is cut away, as at 12, upon its underside to furnish two dia t ically opposite recesses for the circular bits13 to extend within the peripheral plane of such enlarged portion. Thehead is likewise provided with grooves 15 to serve as guideways for theL-shaped bit carriers 15; but in this instance the grooves are inclinedto be in angular relation to a plane extended through the head axis ormake said grooves parallel therewith, as at 14 in Fig. 7, and adapt thecarriers to be adjustably secured thereto at an inclined angle withrespect to said axis. The arms 15 of the carriers are each desirablyformed of a T-shape in horizontal section to provide lateral flanges 16which respectively bear against the outer faces 11 of the head while thelongitudinal tongue portions 16 are formed to make a sliding fit betweenthe side walls of said grooves. The other arms 15 of the carriers areprovided upon their under sides with convex seats 17 for the bits andhaveextending therefrom screw threaded studs 18 so as to be in alinementor parallel with the aforesaid tongues, or the grooves 14, as shown inFig. 1 or, where the grooves are disposed as represented in Fig. 7 thesame ends are accomplished by inclining the tongue 16 with respect tothe carrier and arranging the stud to be obliquely to the tongue insteadof with the carrier proper.

According to this invention the bits are severally formed with a centralaperture .13 for the stud which terminates in a concavity 13 forregistering with the opposing said convex seat and affording a largebearing surface to reliably prevent the accidental displacement of thebits after the latter have been secured in adjusted positions by thenuts 18.

By reason of the inclined disposition of the grooves lt, it is obviousthat the carriers are correspondingly tilted to furnish clear ance forthecutting edges 13 of the bits and are thus maintained at everyadjusted position within the travel of the carriers as limited by anelongated slot 19 in each of the carrier arms 15 through which thesecuring bolt 20 passes for engagement in the threaded holes 20 of thehead.

21 are jointing knives or cutters formed of imperforate blades, see Fig.6, with beveled advance cutting edges 21. To secure these knives to thehead, grooves 22 are provided in the under side of the head portion 11and the knives are adj ustably held against the tops 22 of therespective grooves by slotted posts 23. Engagement is had between theknives and said posts by inserting the former through post-slots 23,while the posts are socketed in cavities 24 provided intermediate thelengths of said grooves and thus secured by having screw threadedprolongations 23 extended through reduced openings 24 of the posts andhaving the protruding portions engage nuts 25 which bear against theupper surface of the head part 11.

The bits 13, shown in the drawings, are of the type employed in cuttingrabbets, or the like, but it is obvious that the shape or configurationof these, as well as of the cutters, or knife blades, will be governedby the various kinds of work to be done.

The herein illustrated manner of assembling and mounting of bits andknives contribute to the efficiency of the head and notably theprovision of convex bit seats upon the cutter carriers which in turn aremovable in inclined directions.

lVhat I claim as my invention, is

1. The combination with the head consisting of a hub with an enlargedlower portion, said lower portion being provided with grooves for cutterblades and in its periphery with inclined grooves for bit carriers, saidcutter blades, and means to adjustably secure the blades in theirrespective grooves, of bit carriers adjustably secured in said inclinedgrooves, bits for said carriers, and means to secure said bits inadjusted rotary positions upon the carriers.

2. The combination with the head consisting of a hub with an enlargedlower portion having diametrically opposite recesses in its under side,said lower portion being likewise provided upon its under side withgrooves for cutter blades and in its periphery with inclined grooves forbit carriers, said cutter blades and means to adjustably secure theblades in their respective grooves, of bit carriers adjustably securedin said inclined grooves, bits for said carriers, and means to securesaid bits in adjusted rotary positions upon the carriers.

3. The combination with the head consisting of a hub with an enlargedlower portion, said lower portion being provided upon its under sidewith grooves for cutter blades and in its periphery with inclinedgrooves for bit carriers, said cutter blades, and means to adjustablysecure the blades in their respective grooves, of bit carriersadjustably secured in said inclined grooves and provided with convexbit-seats for said car riers, and means to secure said bits in adjustedrotary positions upon said seats.

l. The combination with the head consisting of a hub with an enlargedlower portion having diametrically opposite recesses in its under side,said lower portion being likewise provided upon its under side withgrooves for cutter blades and in its periphery with inclined grooves forbit carriers, said cutter blades, and means to adjustably secure theblades in their respective grooves, of bit carriers adjustably securedin said inclined grooves and provided with convex bit-seats, bits forsaid carriers, and means to secure said bits in adjusted rotarypositions upon said seats.

5. The combination with the head provided with slots in its periphery,of L-shape bit carriers secured in said slots and adjust-' able indirections inclined with respect to the axis of the head.

6. The combination with the head having slots in the periphery, of bits,and bit carriers seated in said slots and adapted to slide therein andbe adjustable in directions obliquely to the axis of the head.

7. In combination with a head, a bit carrier having a convex bit seatingface and a stud projecting from said face, a bit formed with a concavityto receive said convex face and with an opening of equal diameterthroughout to snugly receive said stud, and means to secure said bit tosaid seat.

8. The combination with the head having an enlarged lower portionprovided with grooves in its periphery, of bit carriers engaging in saidgrooves adapted to be adjustably moved in inclined directions withrespect to the axis of the head.

9. The combination with the head having an enlarged lower portionprovided with grooves in its periphery, of bit carriers engaging in saidgrooves adapted to be adjustably moved in inclined directions withrespect to the axis of the head, said bit carriers being each providedwith a depending stud in alinement with the direction of the adjustablemovements of the respective carriers.

10. In combination with a support, bit carriers, and means whereby saidsupport and carriers are related so that when said carriers are moved inthe direction of their length said carriers are adjusted in directionsinclined with respect to the axis of the head. In. testimony whereof Iaflix my signature in presence of two witnesses.

WARREi V. PHILBRICK.

W itnesses E. H. ALvoRD, A. B. SMITH.

